机制铜币也称铜元、铜板、洋板等,它在我国数千年的货币历史长河里虽然是昙花一现,但却是我国货币文化不可或缺的一环。机制币的出现,顺应了历史的发展,逐步替代了在我国行用2000多年的圆形方孔制钱,既是我国钱币铸造技术的重大改革,也是我国钱币形制的一次革命,对当时经济发展 Mechanism of copper coins, also known as copper, copper, ocean board, which in our long history of thousands of years of currency is short-lived, but it is an integral part of our currency culture. The advent of mechanism coins conforms to the development of history and gradually replaces the use of round square holes for more than 2000 years in our country to make money. It is not only a major reform of China’s coin-casting technology, but also a revolution in our country’s coin-shaped economy. At that time,